I am a Rails newb. Am using an online tutorial to learn the rails.
It is about creating a simple blog. I have generated the scaffolding
for the categories table and the posts table following the
instructions. I expect posts to infer that category_id is a foreign
key to the categories table and to therefore generate a dropdown list.
However I am getting an textfield when i hit the new post page.
(category_id is assigned 0 whenever I create a new post). I am very
much a newb at rails, am I missing something obvious here?